Carson MicroBrite 20x-40x LED Lighted Pocket Microscope for Learning, Education and Exploring (MM-24, MM-24MU) Zoom Pocket Microscope with 20x-40x Power Magnification Compact and Lightweight | Included Accessories: Base and 2 Specimen Slides LED Lighted to ensure bright and clear subjects | Dimensions: 1.125'' x 3.875'' x 2.125 (W x H x D) Runs on 3 LR-44 Button Cell Batteries (Included) | Weight: 2.0 oz. Backed by Carson's One Year Limited Warranty | Perfect Beginner Portable Microscope for Learning and Exploration